Battery Internal BLP633 OnePlus 3t Original Part for 3400ma for sale online | eBay
Im so glad I replaced the battery on my 3+yr old Oneplus 6T. I could probably use it another 3yrs. Take it to a local shop if you dont diy : r/ oneplus
Replacement OnePlus Battery BLP685 For One Plus 6T With 3700mAh | eBay
One Plus OnePlus 6T BLP685 Battery Replacement 3700mAh For OnePlus 6T (UK STOCK) | eBay